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Grok Code Fast 1

Grok Code Fast 1 is xAI's specialized coding model optimized for fast code generation, completion, and debugging. It delivers low-latency code output within a context window of 256K tokens, tuned specifically for software development workflows.

ReasoningTool UseImplicit Caching
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'xai/grok-code-fast-1',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • What programming languages does Grok Code Fast 1 support?

    Grok Code Fast 1 handles code across major programming languages including Python, JavaScript, TypeScript, Go, Rust, Java, C++, and others. It is tuned for general code understanding rather than being limited to specific languages.

  • How does Grok Code Fast 1 differ from using Grok 3 or Grok 4 for coding?

    Grok Code Fast 1 is specifically optimized for code tasks with lower latency and code-tuned output quality. General-purpose Grok models handle coding alongside other tasks but are not specialized for the development workflow.

  • What is the context window for Grok Code Fast 1?

    256K tokens, sufficient for processing large files, multiple related files, or extensive code context within a single request.

  • What does Grok Code Fast 1 cost?

    This page lists the current rates. Multiple providers can serve Grok Code Fast 1, so AI Gateway surfaces live pricing rather than a single fixed figure.

  • How do I authenticate with Grok Code Fast 1 through Vercel AI Gateway?

    Use your Vercel AI Gateway API key with xai/grok-code-fast-1 as the model identifier. No separate xAI account is needed for gateway-managed access.

  • Can Grok Code Fast 1 handle code review tasks?

    Yes. It can analyze code for potential bugs, style issues, performance problems, and security concerns. It's well-suited for automated review in CI/CD pipelines.

  • Does Vercel AI Gateway support Zero Data Retention for Grok Code Fast 1?

    Zero Data Retention is not currently available for this model. ZDR on AI Gateway applies to direct gateway requests; BYOK flows aren't covered. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.